Scale remover



Dec. 17, 1935. A, G COLE 2,024,993

SCALE REMOVER Filed Sept. 15, 1933 INVENTOR Y Amos GCole Tl'ORNE Y Patented Dec. 17, 1935 UNITED STATES PATENT OFFICE 7 Claims.

This invention relates to improved means for removing the scale from hot wheels or the like during rolling thereof.

A great many devices have been heretofore proposed and used for removing scale from rotating members such as wheels or similar articles during the rolling operation thereof, but certain of these prior devices including water, air or stem jets, have been deficient either in their effectiveness or certainty of operation while other prior scale removers are relatively expensive in manufacture or maintenance.

It is one object of my invention to provide an improved apparatus that is highly effective in removing scale, relatively simple in its construction and operation and adapted for positive control with, minimum interference to the rolling mill operation.

Another object is to provide an improved and simplified scale remover that may be readily applied to new or existing rolling mills.

In one specific aspect of the invention, the foregoing objects are accomplished by providing an overbalanced weighted arm adapted to hold a scaling knife firmly against the tread of a revolving wheel while means are provided for lifting or lowering said arm relative to the wheel.

Other objects and advantages will be more apparent to those skilled in the art from the following description of the accompanying drawing in which:

Fig. 1 is a side elevation of my improved apparatus applied to a diagrammatic outline of a portion of a rolling mill;

Fig. 2 is an end view of the scale remover shown in Fig. 1.

In the illustrated embodiment of the invention which is shown herein merely for the purpose of illustrating one specific form among others that the invention might take, I have diagrammatically shown a portion of the framework I of a rolling mill, the details of whichare not otherwise essential. A roll 2 in cooperation with any other suitable or desired rolls is adapted to roll a wheel, tire or other object 3 rotatable about an axis 4. Hereinafter the term wheel will be used to broadly define any rolled article with which my improved scale remover may be applied.

Suitable mounted upon the end of frame I is an upwardly and rearwardly extending bracket 5 carrying an arm 6 pivoted as at 1 in said bracket. This arm is slightly bent to accommodate it to the structural characteristics of the mill, although various other shapes of arms might be employed depending upon the particular circumstances in each installation. However, the outer end of the arm is provided preferably with a weighted head 8 which carries a removable scaling knife 9. As shown in Fig. 2 the scaling knife preferably con- 5 forms to the contour of the wheel 3 and is held by bolts I5 or other suitable means, these bolts passing through a suitable removable cap l6.

To move arm 6 and knife 9 to and from wheel 3, I have provided a pinion ID on the pivot shaft 10 1 while a rack ll secured to a piston rod I2 is actuated by a suitable servo-motor l3 preferably of the air actuated reciprocating piston type. This motor as shown is supported in any suitable manner by a frame l4 secured to the top of mill 15 frame I.

During the rolling operation on wheel 3, air will be released from the left side of the servomotor l3 thereby to allow the weight of head 8 and the arm to move knife 9 into contact with 20 the tread of the revolving wheel 3. The release and supply of fluid pressure to the servo-motor may be controlled by any suitable valve thereby permitting the gradual raising or lowering of the arm 6. However, with the knife in contact 25 with the wheel tread, it is seen that a very effective means is provided for constantly removing the scale during rolling of the wheel. When the rolling operation is completed, it is only necessary to admit air to motor I3 thereby to actuate the rack and pinion l0 and H to swing arm 6 and knife 9 upwardly entirely clear of the wheel.

It is thus seen from the foregoing disclosure that I have provided a very effective mechanical means for positively removing the scale from the tread of a wheel or other object and that this means may be effectively controlled even to the extent, if necessary, of applying fluid pressure p to the right end of the servo-motor to augment the pressure of weight 8, although in general such operation is not necessary as it is preferable to employ the constant force created by the weight 8, thereby insuring uniform scaling pressure on all wheels.

It will of course be understood by those skilled in the art that various changes mas be made in the details of construction and arrangement of parts without departing from the spirit of the invention as set forth in the appended claims.

I claim:

1. A scale removing apparatus for a wheel rolling mill comprising, in combination, a frame, a pair of rolls supported thereby and between which a wheel is rolled by having one of the rolls disposed within the wheel but eccentric thereto during rolling, a scale removing blade engagable with the wheel while in its eccentric relation, and means whereby said blade is supported by said frame for engagement with the wheel during rolling thereof.

2. The combination set forth in claim 1 further characterized in that the means for supporting said blade includes an arm pivotally supported by said frame. I

3. The combination set forth in claim 1 further characterized in that the blade supporting means includes a pivoted arm having a weighted head in which said blade is disposed.

4. The combination set forth in claim 1 further characterized in that the means for supporting said blade includes an arm pivotally supported by said frame, and a servo-motor operatively connected to said arm for moving the same.

5. The combination set forth in claim 1 further characterized by the provision of a blade carrying arm pivotally supported by said frame, a servomotor, and a rack and pinion operatively connecting said servo-motor and arm for swinging the same relative to the wheel.

6. A scale removing apparatus for a wheel rolling mill comp-rising a frame, a bracket projecting upwardly and rearwardly from said frame, a weighted arm pivotally supported by the upper end of said bracket and carrying a knife at its free end, a reciprocating fluid operated servomotor having rack and pinion connection with said arm for swinging the same upwardly, and means for supporting said servo-motor on said frame.

'7. A scale removing apparatus for a wheel rolling mill comprising a frame, a pair of rolls supported thereby and between which a wheel is rolled by having one of the rolls disposed within the wheel but eccentric thereto during rolling, a bracket supported by said frame, a weighted arm pivotally supported by said bracket and carrying a knife at its free end, a reciprocating fluid operated servo-motor, mechanism for connecting said servo-motor to said arm for swinging the 20 same upwardly, and means for supporting said servo-motor on said frame.

AMOS G. COLE. 

